[Event "Olympiad-10 Preliminaries B"]
[Site "Helsinki"]
[Date "1952.08.16"]
[Round "5"]
[White "Porreca, Giorgio"]
[Black "Koch, Berthold"]
[Result "1-0"]
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. Nf3 cxd4 9. Nxd4 Bc5 10. Nb3 Ba7 11. O-O O-O 12. Nc3 Qc7 13. Bd2 Rb8 14. Rac1 b5 15. Qb1 Qd8 16. Rfd1 Ng4 17. Ne4 f5 18. Nec5 Bxc5 19. Nxc5 Nxc5 20. Rxc5 Qb6 21. Qc2 Bb7 22. Bxb7 Rxb7 23. h3 Nf6 24. Rc6 Qd4 25. Bc3 Qe4 26. Bxf6 Qxc2 27. Rxc2 Rxf6 28. Rd6 e5 29. Rxf6 gxf6 30. Rc6 Rd7 31. Rxa6 Rd2 32. Rxf6 Rxb2 33. e3 Rxa2 34. Rxf5 b4 35. Rxe5 b3 36. Rb5 b2 37. Kg2 Kf7 38. g4 Ke6 39. g5 Kd6 40. h4 Kc6 41. Rb8 Kc7 42. Rb3 Kd6 43. h5 Kc5 44. g6 hxg6 45. hxg6 Kc4 46. Rb8 Kc3 47. g7 1-0